A's Triple-A infielders don't get settled

Oakland A's second baseman Jemile Weeks listens to the National Anthem prior to a spring training baseball game between the Oakland Athletics and the Cincinnati Reds on March 21, 2013 in Goodyear, Arizona.

Oakland A's second baseman Jemile Weeks listens to the National...

ARLINGTON, Texas -- Shortstop Hiroyuki Nakajima played second and third the past two days. Second baseman Jemile Weeks is playing some shortstop. And Grant Green, once a shortstop, is a second baseman.

And look who's back at first base for Sacramento: Daric Barton, who cleared waivers again and was outrighted.

Melvin spoke at length with Sacramento manager Steve Scarsone, who reported that Nakajima looks "really comfortable" at second and Weeks is "very playable" at short.

Nakajima, signed to a two-year, $6.5 million contract, hasn't made his big-league debut. His rehab assignment ends Wednesday, but he's expected to remain in Sacramento a while.

"It keeps a lot of options open, and we'll find out more about him, too," Melvin said.

It was Weeks' idea to try short, according to Melvin, who said, "Like anybody, if you can play different positions, it gives you more chances to get here."

As for Barton, who cleared waivers after getting designated for assignment, Melvin said the first baseman remains an asset: "For us, there's more value because we don't have a lot of depth at the position."

Norberto limbo: Jordan Norberto, released when the A's needed a spot for Barton, remains unsigned and said he continues to throw while recovering from an elbow strain.

Norberto's preference is re-signing with the A's, but other teams - the Royals, Cubs and Rays are believed to be on the list - have expressed interest. Most are waiting to make sure he doesn't need Tommy John surgery.

"I've never felt anything for a team before like I do about the A's - the teammates, the pitching coach, the manager, the fans," said Norberto, a key reliever last season until experiencing shoulder tendinitis, by phone.

A's on deck

Wednesday

at Rangers

11:05 a.m. CSNCA

Parker (2-5) vs. Wolf (0-0)

Thursday

Off

Friday

at Astros

5:05 p.m. CSNCA

Milone (4-5) vs. Bedard (0-2)

Leading off

Familiar face: The Rangers will start Ross Wolf, who pitched briefly for the 2010 A's, in Wednesday's series finale. It'll be Wolf's Rangers debut and first big-league start. He's replacing Nick Tepesch, who has a finger blister.

- John Shea

John Shea and Susan Slusser are San Francisco Chronicle staff writers. Slusser reported from the Bay Area.